Span Port sessions

Unanswered Question
Jagdeep Gambhir Thu, 08/30/2007 - 04:31
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Hi,

Is possible with RSPAN only.


Only one destination port is allowed per SPAN session, and the same port cannot be a destination port for multiple SPAN sessions.



Each RSPAN destination session has one or more destination interfaces for each RSPAN VLAN that they support.


RSPAN destination sessions are limited to two, or one if a local SPAN or a source RSPAN session is configured on the same switch.


Hope that helps


Regards,

~JG

MY understaning was that with a single local session I can have two destination interfaces. if that is not possible I should create a second local span session for the second destination interface. Correct me if I am wrong but I thought I read this with CCO where two destinations are allowed witha single local session.


Thx

Thx

Jagdeep Gambhir Thu, 08/30/2007 - 05:23
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Only one destination port is allowed per SPAN session, and the same port cannot be a destination port for multiple SPAN sessions. A switch port configured as a destination port cannot be configured as a source port. EtherChannel ports cannot be SPAN destination ports.


http://www.cisco.com/en/US/docs/switches/lan/catalyst6500/catos/6.x/configuration/guide/span.html#wp1019855


You can have two span sessions,

http://www.cisco.com/en/US/docs/switches/lan/catalyst6500/catos/6.x/configuration/guide/span.html#wp1019903


Hope that helps!


Regards,

~JG


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Jagdeep Gambhir Thu, 08/30/2007 - 15:08
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I don't think so. Never came across this kind of issue.



Regards

Jagdeep Gambhir Fri, 08/31/2007 - 12:01
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Hi Ka,

You can create two different span sessions

using the same source port with different destination ports.


The command to add


set span create


Here's an example (all ports are inactive and not connected):

******************************************************************************************

**********

cat6k> (enable) set span 3/1 3/8 create

cat6k> (enable) set span 3/1 3/9 create

cat6k> (enable) show span


Destination : Port 3/10

Admin Source : Port 3/1

Oper Source : None

Direction : transmit/receive

Incoming Packets: disabled

Learning : enabled

Multicast : enabled

Filter : -

Status : inactive


------------------------------------------------------------------------

Destination : Port 3/9

Admin Source : Port 3/1

Oper Source : None

Direction : transmit/receive

Incoming Packets: disabled

Learning : enabled

Multicast : enabled

Filter : -

Status : inactive



Total local span sessions: 2

cat6k> (enable)


Hope that helps


~JG


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